EDIT: A lot of people will tell you that the FED and Zorki cameras are cheap copies of the Leica ('though I wonder how many know which Leica it copied). It's true that they don't cost much but many of us see them as a respectable camera in their own right. Once checked and adjusted etc by any camera technician they become things of beauty and pleasure. And, they have one or two advantages over the original; f'instance the take-up spools design was improved, the range-finder windows coloured for extra contrast and the lenses were coated.
The designers in the old USSR also had the the Contax experience and design to feed into the cameras and so you get the best features from both of them; a good example being the Jupiter-8 f/2 lens being made to fit the FEDs and so on. Most of these features are of historic interest, as I doubt if many load their own cassettes and appreciate the better FED version of the Contax design but the point is they are a camera in their own right. And that expertise led to the FED 2 which many praise.
As I see it the FED/Zorki relationship to the old Leica is rather like the Minolta CLE's to the Leica CL: meaning it took off from it and had a life of its own.
Lastly, many will tell you that the cameras are crude but that's a harsh judgement on a camera made 60 or more years ago. If it was an expensive Leica they'd spend hundreds getting it right but won't spend a fraction of that on a FED or Zorki. Worse still, a lot of people think they can be serviced etc at home sitting at the kitchen table and using the bread knife instead of a screwdriver or two. The result is a lot of botched cameras but the blame is put on the makers and not the bodgers.
I've FEDs and Zorkis in the collection that have been looked after and neglected ones and, after having a little money spent on them, they can hold their own with the original Leicas. And I know what it cost to have the Leicas worked on too. So this isn't a guess but based on reality and using them all.
As for adjusting the lenses, this is only needed to make them usable on other makes of camera, or to repair the bodges done by people who think lenses are easy to check and service without any equipment. This can happen to almost any make of camera but only the ex USSR ones seem to get blamed on the makers, even 60 years after leaving the factory.
Many other on this forum will tell you what pleasant cameras they are to use and own.
BTW, you can get a good deal of information about using them here:
http://www.fortunecity.com/marina/marine/569/rusrngfdrs/fed1zorki1.html
Regards, David